Pen bag



FIG. 1 is a Perspective view of a pen bag showing my new design;

FIG. 2 is a Front view of the pen bag as shown in FIG. 1;

FIG. 3 is a Back view of the pen bag as shown in FIG. 1;

FIG. 4 is a Left-side view of the pen bag as shown in FIG. 1;

FIG. 5 is a Right-side view of the pen bag as shown in FIG. 1;

FIG. 6 is a Top view of the pen bag as shown in FIG. 1; and,

FIG. 7 is Bottom view of the pen bag as shown in FIG. 1. 

CLAIM I claim the ornamental design for a pen bag, as shown and described. 